Search
Now showing items 591-600 of 662
Assessment of the population dynamics, foraging activity, and pollination efficiency of Agapostemon angelicus Cockerell in male-sterile cotton
(1987)
Field studies were conducted on the solitary ground nesting bee species, Agapostemon angelicus Cockerell (Hymenoptera: Halictidae), a pollinator of potential value in hybrid cotton production programs on the Texas High ...
A study of qualitative and quantitative aspects of particle desorption mass spectrometry
(1987)
The goal of this study has been to expand the analytical scope of ²⁵²Cf particle desorption mass spectrometry (PDMS). The technique has a unique set of features: simple spectra, usually with a predominant parent ion peak ...
Elementary principals : espoused theory and professional practice
(1987)
No decade thus far has witnessed a more vigorous pursuit for academic excellence than the 1980's. As the literature suggests, the impetus for change to improve the quality of education originates with the professionals ...
The solubility of phosphate, iron, and calcite in a flooded rice environment and the effect of common soil solution constituents on the precipitation of calcium phosphate
(1987)
The objective of this study was to investigate the solubility of phosphorus, iron, and calcium carbonate in flooded soil. Soil solutions were collected and analyzed for the major inorganic solution constituents. Solubility ...
Chromosomal variation in Peromyscus boylii
(1987)
Karyotypic data are presented for a total of 723 individuals of Peromyscus boylii from Latin America. The range of karyotypic variation now documented in P. boylii (FN = 47-68) is greater than that known for any other ...
The development of computer vision algorithms for agricultural vehicle guidance
(1987)
Image processing algorithms were developed and tested for computing a guidance signal for an agricultural tractor traveling on row crops. Field images of various row crops were recorded on videotape with a tractor-mounted ...
An experimental study of the effect of calcium on mood
(1987)
This experiment was designed to assess the effect of dietary calcium supplementation on mood. The participants of the study were seventy-two male and female students. Using a double-blind procedure, they were administered ...
Determinants of client control mechanisms in service organizations
(1987)
Service organizations require information in order to provide services (Bowen, 1986; Mills & Margulies, 1980). Clients are the source of that information, resulting in interaction between clients and service organizations ...
Development of daylighting prediction algorithms for atrium design
(1987)
To the extent that daylight can be effectively admitted and distributed in large buildings, daylighting can reduce dependence on artificial light and conserve energy. Effective in all climates, an atrium can serve more ...
The effects of an employee fitness program on worker productivity, absenteeism, and health care cost
(1987)
Forty-five sedentary volunteers, employed by Westinghouse Corporation, completed pre-, mid-, and post-test evaluations and served as subjects for this investigation. Subjects underwent evaluations for maximum oxygen uptake, ...